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Ships within 48 hours · Estimated delivery Aug 22 - Aug 27
986/987/981
we found that the stock openings in the slam panel could cause a restriction at high flow demand
1x feel steering wheel cover
**Testing performed with California ACN 91 octane pump gas
Our system is a complete redesign from the airboxes to the turbo inlets with the aim of reducing pressure loss while increasing the flow rate and keeping inlet temperatures low
GFB Spares- Atmosphere Conversion Kit suits T9103 & T9133 for Subaru WRX STi 30x23x4 986/987/981MACH 2 ATMOSPHERE UPGRADE KIT TO CONVERT FROM RECIRCULATING TO ATMOSPHERE VENTING. Includes trumpet, firmer spring, and 33mm hose plug. To vent the Mach 2 to atmosphere, you need to ensure the piston stays closed at idle, and the recirc hose is plugged. The 5933 Atmosphere Conversion Kit includes a 33mm hose plug to block off the recirc hose, a trumpet to replace the hose outlet on the Mach 2 (not necessary for functionality, but makes the sound
